Portable elevator.



J. STEEVBR. PORTABLE ELEVTOR.

APPLICATION FILED DEG. 64,1913.

Patented Sept. 8, 1914.

3 SHEETS-SHEET l.

J`. STEEVER. PORTABLE ELEVATOR. AEPLIOATION ELLBD DBG. 11,. 191s.

f Patented sep1.8,1914.

3 SHEETS-SHEET 2.

' sired altitude for delivery, and ,anvinterf illustrated and claimed. r y ,In the accompanying drawing`sf-l`igure through the machine: Fig. 3 is a horizonan enlarged vertical section in line with the `carrier may' be adjusted up and down with frito s JOI-IN STEEVER, PLYMOUTH, PEN'NSXLVANIA.

PORTABLE ELEVATOR.

Specification of Letters Patent.

Patented sept. s, 1914.

Application filed December 6, 1913. Serial No. 865,129.

To all whom it may concern.'

Be it known that l, JOHN S'rEEvnR, a citizen ot the United States, residing at Plymouth, in the county of Luzerne and State of Pennsylvanizu have' invented new and useful lniprovcnients in Portable Elevators, of which the following is a speciilcation.

This invention relates to portable elevators, the objectof. the invention being to produce a machine ot the class referred to which isespecially designed for handling building'and other materials such as stone, sand, gravel, coal and the like, the machine operating automatic-ally to remove such niaterial gradually and continuously "from a pile or heap on the ground and deliver-the same to any suitable receiving agent such as a stationary rceptacle, carts, cars and other vehicles-at a suitable elevation.

, AOne ofatlie principal objects of the invention is to, proiiide anovel construction and arrangeiient of scraper for' initially renioving the material from the pile or heap on the ground, combined with an endless ele vater for carrying said material to the deposed carrier of novel construction,niounting and operation wlnch receives the n'iaterialfrorn the gathering scraper and .delivers said material to the elevator. y

A further object of the invention. is to provide means wvliereby said elevator and the relation to the supporting truck frame;v alsoineans for. raising and lowering the stantiallyfhorizontal plane inv order to obtain the proper relation l etweeiitlic scraper and the material so as to produce an even. and continuous feed of such material from the pile or heap to the elevator proper. v

With the above .and other objects ink view, thel invention consists in the construction, combination and arrangement of parts, as will" hereinafter 'be more fully described,

1 is a plan view of the machine. Eig. 2 is a central vertical longitudinal section tal section. through .the machine. Fig. d is vertical axis `et ,movement of the' scraper .section in .line with the vertical operating shaft. Figfd is a detail broken perspective view showing the vtelescopic relation be tween the upper and lower sectioii's of the elevator frame.

The portable elevator contemplated 'in this invention embodies, in tliehipreerred form thereof, a Wheeled truck as illustrated, said truck einbedyinga tru-ck frame.

l, a rear equipped with carrying wheels 3, anda front axle 4 equipped with wheels 5 and mounted to turn on a central vertical axis Aas indicated in the drawings, the arched as shown, forexample, in Fig Zand provided with a dislrshaped bearing plate ori'th wheel G which works in contact with the lower side of al corresponding Wheel carried by a bolster 8 bearing a fixed relation to the truck traino,

`the plates ory wheels 6 and 7 being pivotally bolt, or pivot (not-shown) but of the usua 'consi struction and,A arrangement, whereby the connected together by a vertical kin axlee is adapted toturn for steering purr j poses. Chains 9 extend from the oppo-'- site ends of the axle 4f forward to a vertical 'steering post l0 .aroundwhichv said chains 9 are Wrapped in opposite directions, with a handwheel 11j arranged'within reach of the operator who occupies a seat 12 mount led oii a standard 13; as shown securedto the y truck frame l; Y

Mounted upon and in fixed relation tothe truck frame 1 .is a triangular-shaped Aguide frame 14 by which the elevator proper is supported and by meins` of wliiclrsaid elevater is rendered" adjustable inthe direc;

tion lof its length. In carryingiuit this part 1 of theginvention, the triangular frame 14 is provided with parallel langedguides 4l5 within and between.; which the lopposite side bars 16 of the; lower sectionof the elevator fra-me are inountedffor; sliding` movement. By reference to Figi-1,15' it will' be observed that tlie'side bars or portions, 16 are odset outwardly as showniat .17 and the portions 17 are received'in the guides 15 so aste en`-.

able' the elevator fraineto be slid upwardly and `downwardly in the .direction of length` of the elevator traine., Tlie-i'ipper section 18 of the elevatorfranie correspoiids'ig'iits f general shape with' the lower section Ildas also shown in Fig.' 61 but issntliCiently smaller to teleseope'and'hoiise within-.the

lower section i6 andl isfalso providedfivth' the laterally and outwardly oset portie which are slidable in the corresuondingrf tions 1i' of the lower elevator' frame section 16.

it the lower end of'the lower section 16 of the elevator frame is journaled a horizontal shaft vvhile a corresponding shaft 2l is journaled in the upper extremity of the upper telescopic section 1S of the elevator frame. The elevator frame as a Whole isy thus 'composed of relatively 'slidable tele- 4copio sections which provide for lengthening and shortening said elevator frame to accommodate endless chains of different lengths said chains carrying flights or blades as will hereinafter appear. In order to pro vide for lengthening and shortening said elevator frame, the upper section 18 1s provided with a racl face 22 which is engaged by a pinion 23 on a horizontal shaft 24 journaled in bearings in the upper end of the lower elevator frame section 16 and provided with an operating crank handle 25.

rlhe lower section 1G ofethe elevator frame is itself adjustable in the direction of its length by the mechanism shown in `l"ig. 2 wherein it will be observed that said lower section is, like the upper section provided with a rack race 2G which is engaged by a' pinion 2T on a horizontal shaft 28 journaled in the truck frame 1 and provided at one end with an operating crank handle 29. It will now be understood that the elevator frame, as a whole may be adjusted up and down in the guide frame 14 which is carried by the truck and that independently of the adjust: inout just referred to, the upper Section of the elevator may be alsov adjusted for the purpose of lengthening and shortening the frameof the elevator as a whole, enabling said elevator to deliver Iat higher or lower points as may be found desirable `or necessary.

Extending around upper and lower sprocket wheels 30- and 31, respectively mounted on the shafts 21 and 2O above rcferred to, is an endless elevator chain 32 having secured thereto at equal intervals flights, or blades 33. The lower run of said blades travel close to or in contact with the bottom floor of the elevator which as shown in Fig. 2 comprises a lower section 34 and an upper section 35 having a relatively slidable and telescopic connection with each other to provide for the lengthening and shortening of the elevator as a whole, as hereinabove explained. Adjacent to the upper end, the elevator is provided with a discharge opening through which the. material carried upwardly by the lower run of blades or liights 33 is discharged into a downwardly' inclined discharge Vchute 36 `eclu'ch overhangs the machine at one side as illustrated, for elxample, in Figs. 4 and 5 in order that the material may be discharged at .e suitable elevation into a receptacle of any character.

The elevator hereinabove described is 'driven by the following mechanism: 37 des-- and 4T on horizontal shafts 4S and '49 located respectively at the inner and outer ends of the scraper mechanism as best illustrated in Figs. 2 and 3. rl`he frame of the scraper which is illustrated in cross section in Fig. 4, comprises a pair of parallel top rails of angle iron as shown in lFig. 4 and a horizontal bottom plate or floor 5l.

yllxtending upwardly from one of the longitudinal edges of the floor or bottom plate 51 isa vertical guard wall or fence 52 the top edge of which is extended inwardly over the floor 51 as shown at 53 to form a 'flange which overhangs the bottom run of scraper blades 54, the blades 54 being secured to the chain 55 at suitablev intervals and distances apart and the bottoni run of said blades being arranged to travel lengthwise of and in contact with the top surface of the bot.- tom floor 51 clearly shown in Figs. 2 and 3. In Figs. 3 and 4 it will be observed that while the inner extremities of the scraper blades 54 travel in close proximity to or coutact with the vertical guard wall or fence the opposite extremities of said blades extend beyond the opposite lateral longitudinal edge of the floor or bottom plate 51 and that the outer extremity of each of said blades is deflected toward the discharge end of the scraper as clearly indicated at 55, the object being -to Igather in theniaterial from the heap or pile and cause the same to be deposited upon the bottom plate or floor 51 along which it is subsequently swept or scraped by the blades 54 until discharged upon the rotary disk-conveyer hereinafter more particularly described.

The projecting extremity of the lioor or bottom plate 51 is upturued as shown at 36 to prevent the same from catching in the ground or pile of material being operated upon. 57 and 58 respectively designate upper and lower chain supporting rollers, the saiue acting to hold the respective upper and lower runs of the chain in proper aline- .ment, the upper run of blades 54 traveling above the angle iron top rails 50 as shown in Fig. 4.

ln conjunction with both the elevator and the scraper hereinabove described in detail, l employ a rotary disk conveyerGO which operates ina substantially horizontal plane Vil() What I claim 1s l. In a portable elevator of the class de* scribed, a Wheeled truck frame, an endless scribed, a'ivheeled truck frame, an endless elevator carried thereon, an endless scraper operating in a substantially horizontal plane, and a` rotary disk convcyer which receives the material from the scraper and delivers said matcrial to said elevator, said disk conveyer being supported by and movable with the frame of said endless elevator.

l. In a portable elevator of the class de scribed, a wheeled truck frame, a longitudinally adjustable endless elevator carried thereon;` an endless scraper operating in a substantially horizontal plane, and a verti ca-lly adjustable rotary disk conveyer which receives the material from the scraper and delivers said material to said elevator.

5. In a portable elevator of the class described, a'ivheeled truck frame, an endless elevator carried thereon, an endless scraper'- operating in a substantially horizontal plane, a rotary disk conveyer which receives the material from the scraper and delivers said material to said elevator, said disk con-v veyer operating in an approximately hori- :aontal plane, and a non-rotating guard located above said disk conveyer.

"6. In a portable elevator Aoit the class described, a Wheeled truck frame, an endless elevator carried thereon, an endless scraper operating in a substantially horizontal plane, and a rotary disk conveyer which receives the material from the scraper and delivers said material to said elevator, said scraper being,` mounted for swinging movement in a substantially horizontal plane.

7. I n a portable elevator of the class' described, a Wheeled truck frame, an endless elevator carriedthereon, an endless scraper operating in a substantially horizontal plane, and a rotary disk eonveyer which receives the material from the scraper and de'- lirers said material to said elevator, lsaid scraper beingmounted for swinging movement in a. substantially vertical plane.

S. In a portable elevator of the class described, a Wheeled truck frame, an endless elevator vcarried thereon, an endless scraper operating in a substantially horizontal plane, and a rotary disk conveyer which receives the material from the scraper and delivers said material to said elevator, said scraper being supported by the frame of said elevator and also connected therewith by a universal joint.

9. In a portable elevator of the. class ctescribed, a wheeled truck frame, anendless elevator carried thereon, an endless scraper L )perating` in a substantially horizontal plane, a rotary disk conveyer which receives the material from the scraper and delivers said material to said elevator, said scraper embodying a scraper frame, and a, floor over and above which the scraper blades travel.

In testimony whereof I aliX my signature in presence of two Witnesses.

JOHN STEE'VER.y

Witnesses:

ABDEL PHILLIPS, VVLLLIAM Benen. 

